Sheet-piling.



PATENTED JULY -.21, 1903.

L. P. FRIESTEDT.

' SHEET PILING.

APPLICATION FILED 90129, 1902.

N0 MODEL.

CNrTED STATES Patented fuly 21, 1903a LUTHER P. FRIESTDT, OAF CHICAGO, ILLINOIS..

SHEET-.pm mc.

SPECIFICATION forming part of Letters Patent No. 734,314, dated July 21, 190s. Application filed October 9, 1902. Serial No. 126,498. (No model.)

To a/ZZ whom ift-may concern:

Be it known that'l, LUTHER P. FRIESTEDT, a citizen of theUnited States, residing at. Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvementsin Sheet-Piling; and I do here? by declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled inthe art to which it appertains to make and use the same. Y

This invention relates to sh eetpiling,land'y has for its object to provide an improved metal beam' differing somewhat from the line 2, Fig. 1, looking in thedi'rection indi`y cated by the arrow.

The beam-sections havethe same alternate arrangement as thatset forth in the patent.- referred to, the seotionAbeing set with theY flange edges pointingoutwardly and the section B set withits lflanges vpointing inwardly and having an interlocking engagement edge- Wise. In the present application the channel-beam A is formed-*with* the .integral additional flanges 3, Which-'are 4turned outward,

at right angles with reference vto the usual'A beam-flanges 4 and parallel with the web 5 of the beam. The flanges 3 overlap the corners and a part of the web 6 of the two adjacent beam-sections B, as shown in Fig, 1.

The wings 7 of the companion angleirons 8 are riveted to the back and adjacent to the corners of the beam-sections A, as at 9, the wings lO lying parallel with the flanges 4 and providing a space a for the reception of the flanges of the beam-sections B in assembling and locking the parts together. This con.- struction forms a very strong connection for the interlocking beam edges and exposes nothing but the beam-surfaces on the out- 'side and where the greatest resistance is to be met,` the angle-irons being all located in the inside. The method of constructing the corner-sections is :different from that described and -and then positioned to bring the web parts 13 at right angles to 'each other. In the inside corner so formed bytheweb parts is placed an-angle-iron 14, solidly riveted to the half channelsections. In this corner constructionrthe angle-irons 8 are placed at right angles t'oieach other in corresponding to the relative position of the companion half-sections 1l and 12, and rigidly secured thereto, the

free wings 10 extending aroundin the usual position for theengagement of the [langes of y I claim, and desire to. secure by Letters Patent, is'-f 1. In Asheet-piling, thecombination with a `the sectionsB,the additional flanges 15 on the half-sections overlapping the adjacent corners of the beam-sections B in the main lineal beam? section of an edgewise'- interlocking channel-beam provided with an additional flange extension starting at rightfangles from the edge of the usual flanges and'runningparallel with the web part and overlapping the respective corners of said beamsection and means for loosely retaining the beam-sections in their engaged position, substantially as set forth. f Y f 2. In sheetpiling,the combination'with the beam-section A, provided on eachedge with an additional flange extension lying parallel with the web part thereof, the joininginterextensions, and the angle-irons secured to 9o locking sections B, overlapped by said flange Y,

beams Aand extending around on the outside l around the corners of the half-sections and 1e of the flanges on beams B, substantially as overlapping the flangeson thejoining section set forth. B, substantially as set forth.

3. In a eoinerstrueture forsheet-piling, the In testimony whereof I affix my signature 5 combination with the companion half beamin presence of two Witnesses.

sections turned at right angles with reference LUTHER P. FRIESTEDT. to each other, the corner' angle-iron secured Witnesses: thereto and rigidly joining the half-sections J. B. DONALSON,

andthe angle-irons, secured to and extending L. B. COUPLAND. 

